The phrase "new color choices" means that there are new options or selections of colors to choose from, which were not available before. Full definition
For 2018 they increased bassinet size, improved front wheels, added premium real leather handle bar and bumper bar covers to all the colors and of course new color choices. (momsstrollerreviews.com)
There are also new color choices, slightly upgraded interior trim and for the top trim level, a few more standard features, specifically a sunroof and a rearview camera. (edmunds.com)
Rumors and leaks about new color choices for future iPhones should be carefully scrutinized however. (ibtimes.com)